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345 个结果
  • 简介:AbstractInthisnote,wepresentamethodofconstructingthehomogenizedoperatorforageneralsequenceofdifferentialoperators.Asanexample,weconstructthehomogenizedoperatorforasequenceoflinearparabolicoperators.

  • 标签: HOMOGENIZATION WEAK LIMIT WEAK CONTINUITY of
  • 简介:Differentialproteinsexpressinginectopicandeutopicendometriawereinvestigatedbymeansofproteomicanalysis.Fivepatientsinsecretaryphasewerediagnosedasendometriosisbylaparoscopy.Thefiveectopicendometria(twoatstageⅡ,twoatstageⅢandoneatstageIV)andfiveeutopicendometriaweresurgicallyexcised.One-dimensionalelectrophoresiscoupledwithliquidchromatographyandmassspectrometrywasusedtoscreenandidentifydifferentialproteins.Threedifferentialbandsinone-dimensionalelectrophoresiswereresolvedbyliquidchromatographyandmassspectrometryand14up-regulatedproteinswereidentified,includingcollagenα-1,α-2,α-3(VI),α-1(XIV)chain,actin,annexinA2,EMILIN-1,ferritinlightpolypeptidevariant,fucosyltransferase10,myosin-9,proteinS100-A9,KIAA1783protein,andtwohypotheticalproteins.Ourdataprovidesalistofpotentialbiomarkersforendometriosis.Theidentificationsmaybeusedtodevelopnewdiagnosesforendometriosis.

  • 标签: 子宫内膜异位症 蛋白质组 差异分析 液相色谱 蛋白质表达 生物标志物
  • 简介:Inthispaper,weproposetheconceptofcohomologicaloperator.Concretely,wesuggestthecohomologicaldifferentialoperator,correlativecohomologicaldifferentialoperatorandextensivecohomologicaldifferentialoperatorandbringcovariantderivativeintotheextensivecohomologicaldifferentialoperator,WeconstructonetypeofnonlineardifferentialequationsbyextensivecohomologicaldifferentialoperatorandcomparetheobtainedresaleswiththeYang-Millsequation.

  • 标签: correlative MILLS derivative MANIFOLD involv OPERA
  • 简介:Westudythefleetsizeandmixvehicleroutingproblemwithconstraintsonthecapacityofeachvehicle.Theobjectiveistominimizethetotalcostincludingfixedutilizationcostofvehiclesandtravelingcostbyvehicles.Wegivedifferentialapproximationalgorithmsforthefleetsizeandmixvehicleroutingproblem(FSMVRP)withtwokindsofvehicles,thecapacitiesofwhicharerespectivelyn1kandn2k,n2>n1≥1,k≥1.Usingexistingtheoriesforvehicleroutingproblemsandfeatureofthealgorithmsrepresentedinthepaper,wealsoprovethatthealgorithmsgive(1-(6n+3/((n+1)2k+n+1))differentialapproximationratiofor(k,nk)VRP,n>1and(1-(6n2+3n1/(n1k+n2k)2k))differentialapproximationratiofor(n1k,n2k)VRP,n2>n1>1.

  • 标签: 近似算法 微分 车辆路径问题 使用成本 近似比 VRP
  • 简介:LetXdenoteacomplexanalyticmanifold,andletAut(X)denotethespaceofinvertiblemapsofagerm(X,a)toagerm(X,b);thisspaceisobviouslyagroupoid;roughlyspeaking,a'Liegroupoid'isasubgroupoidofAut(X)definedbyasystemofpartialdifferentialequations.ToafoliationwithsingularitiesonXoneattachessuchagroupoid,e.g.thesmallestonewhoseLiealgebracontainsthevectorfieldstangenttothefoliation.Itiscalled'theGaloisgroupoidofthefoliation'.Someexamplesareconsidered,forinstancefoliationsofcodimensionone,andfoliationsdefinedbylineardifferentialequations;inthislastcaseonerecuperatestheusualdifferentialGaloisgroup.

  • 标签: 非线性微分方程 微分Galois群 复解析流形 包络 Lie广群 LIE对称
  • 简介:Brownian运动和泊松过程(BDSDEP)在随机的时间间隔上与non-Lipschitz系数驾驶的向后的二倍地随机的微分方程被学习。为quasilinear的一个类的答案的概率的解释随机的部分微分积分的方程(SPDIE)与BDSDEP被对待。在non-Lipschitz条件下面,BDSDEP的可测量的答案的存在和唯一结果经由变光滑的技术被建立。然后,为BDSDEP的答案的连续依赖被导出。最后,为quasilinearSPDIE的一个班的答案的概率的解释被给。

  • 标签: 倒向随机微分方程 随机偏微分方程 积分方程 LIPSCHITZ系数 LIPSCHITZ条件 泊松过程
  • 简介:Thispapermainlydiscussesthe"double-trackcharge"system(priceprejudicechargesystem)intheoryandpractice.Theauthorexplainsandanalyzesthe"differentialchargesphenomenon"ofuniversitiesinChinabytaking"Paretooptimality"asregulationstandardand"Darwinoptimality"asempiricalstandard,combiningregulationstandardwithpracticestandard,realisticstandardofvaluejudgmentwithultimatestandard,andfairnesswithefficiency.Thispaperprovidestheoreticalreferenceandanoperationplatformforapplicationandimplementationdifferentialchargesandthecontainmentofcorruptionincollegeenrollment.

  • 标签: 高等教育 微分电荷 双轨迹电荷系统 最优性
  • 简介:Inthispaperweprovethatanaffinehyperspherewithscalarcurvaturezeroinaunimodularaffinespaceofdimensionn+1mustbecontainedeitherinanellipticparaboloidorinanaffineimageofthehypersurfacex1x2…xn+1=const.Weprovealsothatanaffinecomplete,affinemaximalsurfaceisanellipticparaboloidifitsaffinenormalsomit4ormoredirectionsingeneralposition.

  • 标签: AFFINE curvature DIRECTIONS invariant elliptic SCALAR
  • 简介:InthispaertheinequalityofLemma1of[1]isextended.BymeansofourinequalityandthemethodofLyapunovfunctionwestudythestabilityoftwokindsoflargeseatedifferentialsystemswithtimelagandthestabilityofahigher-orderdifferentialequationwithtimelag.Thesufficientconditionsforthestability(S.),theasymptoticstability(A.S.),theuniformlyasymptoticstability(U.A.S)andtheexponentialasymptoticstability(E.A.S.)ofthezerosolutionsofthesystermsareobtainedrespectively.

  • 标签: 时滞偏微分 渐进稳定性 不平衡性 连续矩阵
  • 简介:Anewapproachisgiventoanalysetheregularityofsolutionsnearsingularpointsfortheinterfaceproblemsofsecondorderellipticpartialdifferentialequations.Forgeneralequationswithnonsyrnmetricdominanttermsanddiscontinuouspiecewiaesmoothcoefficients,itisprovedthatsolutionsinH^1canbedocomposedintotwoparts,oneofwhichisafinitesumofparticularsolutionstothecorrespondinghomogeneonsequationswithpiecewiseconstantcoettioionts,andtheotheroneofwhichistheregularpart.Moreoveraprioriestimationsareproven.

  • 标签: 交界问题 椭圆微分方程 单点 先验估计
  • 简介:<正>Inthispaperwegivethenecessaryandsufficientconditionsforallfinitecriticalpointsofquadraticdifferentialsystemstobeweakfoci,andsolveanopenproblemproposedbyYanqianYe.

  • 标签: QUADRATIC DIFFERENTIAL system LIMIT CYCLE Ergodicity.
  • 简介:在这篇论文,我们将扩大严格的稳定性到冲动的微分方程。由使用Lyapunov功能,我们将为冲动的微分方程的严格的稳定性得到一些标准,并且我们能看到推动确实贡献系统的严格的稳定性行为。一个例子也在这篇论文被给说明获得的结果的效率。关键词冲动的微分方程-严格的稳定性-Lyapunov功能先生(2000)题目分类34A37-34D99这个工作被中国(60474008)的国家自然科学基础和上海城市(03ZR14095)的自然科学基础支持,中国

  • 标签: 微分方程 严格稳定性 LYAPUNOV函数 有效性
  • 简介:<正>Weusethemethodofloweranduppersolutionscombinedwithmonotoneiterationstodifferentialproblemswithaparameter.Existenceofextremalsolutionstosuchproblemsisproved.

  • 标签: Lower and upper SOLUTIONS MONOTONE SEQUENCES
  • 简介:Aformulationofadifferentialequationasprojectionandfixedpointpi-Memalloivsapproximationsusinggeneralpiecnvisefunctions.Weproneexistenceanduniquenessoftheupproximatesolution*convergenceintheL2normandnodalsupercnnvergence.TheseresultsgeneralizethoseobtainedearlierbyHulmeforcontinuouspiecevjisepolynomialsandbyDelfour-Dubeaufordiscontinuouspieceuiisepolynomials.Adualityrelationshipforthetwotypesofapproximationsisalsogiven.

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